EP0081082B1 - Verfahren und Vorrichtung zur Herstellung von Wollefasern - Google Patents

Verfahren und Vorrichtung zur Herstellung von Wollefasern Download PDF

Info

Publication number
EP0081082B1
EP0081082B1 EP82110088A EP82110088A EP0081082B1 EP 0081082 B1 EP0081082 B1 EP 0081082B1 EP 82110088 A EP82110088 A EP 82110088A EP 82110088 A EP82110088 A EP 82110088A EP 0081082 B1 EP0081082 B1 EP 0081082B1
Authority
EP
European Patent Office
Prior art keywords
gas streams
nozzle
flow
parallel boundary
inlet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP82110088A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0081082A3 (en
EP0081082A2 (de
Inventor
Edgar Prof. Dr. Muschelknautz
Norbert Dr. Rink
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bayer AG filed Critical Bayer AG
Priority to AT82110088T priority Critical patent/ATE18386T1/de
Publication of EP0081082A2 publication Critical patent/EP0081082A2/de
Publication of EP0081082A3 publication Critical patent/EP0081082A3/de
Application granted granted Critical
Publication of EP0081082B1 publication Critical patent/EP0081082B1/de
Expired legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/01—Manufacture of glass fibres or filaments
    • C03B37/06—Manufacture of glass fibres or filaments by blasting or blowing molten glass, e.g. for making staple fibres

Definitions

  • the present invention relates to a process for the production of fibers by the nozzle blowing process, in which the primary threads in a drawing nozzle are shredded and drawn out by means of exhaust gas flows which are essentially parallel to the primary threads, and in which the exhaust gas flows within the drawing nozzle at least over part of their length in the flow direction of parallel limiting gas flows are surrounded.
  • the invention relates to a drawing nozzle for the production of fibers by the nozzle blowing process, consisting of an inlet part and an adjoining pull-out channel, wherein means are additionally provided for generating parallel gas streams delimiting the pull-out channel.
  • the nozzle blowing process is based on the fact that the melt located in a crucible flows out in the form of a strand under the effect of gravity and additional pressure forces and the melt strand in a drawing nozzle is fiberized, extracted and cooled or cooled below the solidification temperature in a drawing nozzle under the effect of gases flowing essentially parallel to the melt flow is solidified by evaporation of the solvent.
  • the basic principles of such a process were already described in 1922 (DE-PS 429 554) for the production of mineral wool.
  • DE-AS 1 067 572 relates to the use of limiting gas flows, which are intended to form a type of protective jacket around the actual exhaust gas flow.
  • the jet blowing process has the advantage over those processes, in particular for the production of mineral wool, in which the fiberization takes place by means of centrifugal forces, that no mechanically moving parts which come into contact with the mineral melt streams have to be used.
  • fiberization takes place purely aerodynamically using air, steam or other gases.
  • the exhaust gas flow is limited by the coaxial driving jets that are required to generate the pressure gradient.
  • the propellant jets are therefore much faster than the exhaust gas flows.
  • melt threads that get into the area of the drive jets are entrained by them and drawn into the drive jets, so that a kind of whip-bang effect is created, due to which the melt threads are thrown against the inner wall of the nozzle.
  • the object of the invention is therefore to develop a nozzle blowing process in which the fibers produced are kept away from the inner wall over the entire length of the drawing nozzle, as a result of which improved fiber quality and a longer service life of the drawing nozzle can be achieved. Furthermore, the invention has for its object to provide a drawing nozzle which enables the implementation of an improved nozzle blowing process from the above-mentioned aspects.
  • this object is achieved according to the invention in that the speed of the parallel limiting gas flows is 50 to 99%, preferably 60 to 80%, the speed of the exhaust gas flows and the volume flow of the parallel limiting gas flows is in the range from 10 to 80%, preferably between 20 to 60% of the volume flow of the inlet gas flow is set at the nozzle inlet opening.
  • the flow speed of the parallel limiting gas flows is below the speed of the exhaust gas flow. Otherwise the desired shielding of the inner wall of the drawing nozzle cannot be realized.
  • the method according to the invention can be used particularly advantageously for the production of mineral wool fibers, in particular rock wool fibers, since here the disadvantages of the known methods lead to a rapid destruction of the drawing nozzle.
  • the life of the drawing nozzle is significantly extended when producing mineral wool.
  • the additional advantages obtained, that more uniform fibers are obtained with regard to diameter and length, and the proportion of unfibered material (beads) is reduced because wall contact of the threads to be drawn out is largely avoided, are also obtained for fiber production from other materials, such as, for. B. in the production from solutions, dispersions, gels, polymer melts, etc.
  • the present invention is therefore directed to the defibration of liquid systems in general, the following description deals primarily with the defibration of mineral melts, without any limitation Mineral melting is intended.
  • the drawing nozzle consists of a nozzle inlet part 2 and a part 3, in which the threads are pulled out.
  • the nozzle inlet part 2 contains a slot-shaped nozzle inlet opening 21, into which the primary threads 13 enter.
  • an inlet flow 22 is formed with a pressure gradient oriented perpendicular to the surface of the primary thread 13, which causes the primary thread 13 to split.
  • the inlet flow 22 continues as an exhaust gas flow 31 within the drawing nozzle and causes the primary threads split in the inlet 21 of the drawing nozzle to be extracted.
  • the exhaust gas flow 31 is now delimited on both sides by parallel limiting flows 32, the speed of which should at most be equal to the speed of the exhaust gas flows 31.
  • channels 33 are provided between the inlet part 2 and the pull-out part 3 of the drawing nozzle, into which gas is sucked in due to the prevailing pressure gradient.
  • the amount of the gases forming the exhaust gas streams and thus also the speed of the parallel limiting gas streams 32 can be regulated via slide 34.
  • the speed of the parallel limiting gas streams at the point at which they come into contact with the exhaust gas stream should preferably be 50 to 99%, particularly preferably 60 to 80%, of the average speed of the exhaust gas streams.
  • the pressure drop (P1 - P2) is maintained in the embodiment shown here in that the space containing the crucible 1 is separated from the space below the drawing tray containing the fiber depot and the drawing nozzle itself is the only gas passage.
  • the pressure difference (P1-P2) for driving the exhaust gas flows 31 and the parallel limiting flows 32 can, as shown in FIG. 1, be generated by a static pressure difference.
  • the crucible 1, the nozzle inlet 21 and the opening of the channel 33 can be enclosed in an overpressure space, and the pressure P2 at the outlet of the nozzles can be approximately atmospheric pressure.
  • Such distribution crucibles enclosed in pressure chambers are e.g. B. from German patents 803925, 883800 and 946 739 known.
  • the reducing combustion gas can be generated directly by supplying fuel and air into the pressure chamber.
  • the material to be defibred e.g. B. metal melts
  • a protective gas is used as the blowing medium, the surroundings of the crucible 1, ie. H. Maintain P1 at normal pressure and generate a vacuum P2 below the nozzle outlet. It is then necessary to close off the space below the nozzle and to convey the fibers obtained from the vacuum space through locks.
  • Such a procedure is e.g. B. has been proposed in German Patent 2205507.
  • the parallel limiting gas flows 32 are intended to occupy a substantial volume fraction within the pull-out part 3 of the drawing nozzle.
  • each of the parallel limiting gas streams takes up approximately 10 to 30% of the nozzle cross section.
  • the dimensioning can expediently take place by constructing the flow cross sections at the point of first contact of the exhaust gas streams and parallel limiting gas streams.
  • Such a geometrical delimitation of the gas flows is difficult to achieve and understandable, in particular over the length of the drawing nozzle. Therefore, the volume flow ratio of the inlet gas flow 22, which forms the exhaust gas flow 31 in the further course of the nozzle, to the parallel limiting gas flow 32 is expediently specified as a process parameter.
  • the volume flow of the parallel limiting gas flows is preferably 10 to 80%, particularly preferably approximately 20 to 60% of the volume flow of the inlet flow.
  • FIG. 3 shows a cross section through a slot-shaped elongate drawing nozzle with a crucible 1 similar to FIGS. 1 and 2.
  • chambers 35 are formed on both sides of the pull-out gas flow 31, in which 31 stationary roll flows 36 form under the action of the pull-out gas flow.
  • the parallel limiting gas flows 32 are formed by the part of the roll flow 36 which is in contact with the exhaust gas flow 31.
  • the principle according to the invention of avoiding the edge contact of the exhaust gas flow by introducing the parallel limiting gas flows can be combined with all known nozzle blowing processes.
  • the speed of the exhaust gas flow can also be selected as long as a sufficient extraction effect is achieved.
  • the speed of the exhaust gas flow can be in the subsonic speed range, preferably in the near-speed range, or in the supersonic speed range. The only condition is that the ratio of the speeds of the exhaust gas flow and parallel limiting flows is selected according to the invention.
  • the clear separation of the individual fiberization stages and their optimization allows the production of mineral wool fibers of very uniform thickness and length.
  • the method according to DE-OS-3016114 is further improved according to the invention in that the supersonic exhaust gas flow is enclosed by parallel limiting gas flows.
  • FIG. 4 shows a distributor crucible 1, which extends perpendicular to the plane of the drawing and which contains the melt 11.
  • nipples 12 On the underside of the distributor crucible there are nipples 12, from which a plurality of melt streams 13 arranged in a row flow.
  • inlet nozzle plate 2 Underneath the distributor crucible 1 there is an inlet nozzle plate 2 which contains a plurality of inlet openings 21 which are arranged in a row under the nozzle nipples 12 and are designed as Laval nozzles.
  • the blowing medium (preferably ambient air) should reach the speed of sound at the point of the narrowest diameter of the inlet opening.
  • a diverging Laval part adjoins the converging inlet part.
  • the contour of the diverging part is designed according to known flow laws so that the speed of the blowing medium at the outlet end of the nozzle 21 is approximately 360 to 500 m / s.
  • the pull-out section 3 adjoining the inlet nozzle 21 should preferably have a length in the flow direction of 40 to 100 mm.
  • the length and diameter of the desired mineral fibers can be influenced by the length of the pull-out section. Particularly long and thin mineral fibers are obtained with a pull-out section that is as long as possible.
  • the pull-out section is defined by lateral boundary surfaces 37 ′ which form a channel 4, which is extended perpendicular to the plane of the drawing and is common for the inlet nozzles 21 arranged in series.
  • the boundary surfaces 37 ' should preferably run slightly divergent in the direction of flow.
  • the angle between the boundary surfaces 37 ' is preferably between 1 and 10 °, particularly preferably about 4 °. Due to the divergence of the pull-out channel, another easy loading acceleration of the exhaust gas flow 31 and the parallel limiting gas flows 22 causes.
  • the gas forming the parallel limiting gas streams 32 can also be ambient air. It is essential that the parallel limiting gas streams have approximately the same or only a slightly lower speed than the exhaust gas streams, so that the friction between parallel limiting gas streams 32 and exhaust gas stream 31 and the mixing of the two gas streams is as low as possible. Both gas flows advantageously also have approximately the same temperature.
  • the pressure drop necessary to drive the exhaust gas flow 31 and the parallel limiting gas flows 32 is generated by driving jets 43.
  • the propulsion jets 43 are generated from compressed gas lines 41 and preferably with Laval nozzles 42.
  • the propellant jets 43 are mixed with the exhaust gas streams 31 and parallel limiting gas streams 32 preferably at a constant pressure in a mixing zone 44.
  • the pressure in the compressed gas lines is preferably 6 to 10 bar.
  • the speed of the propellant gas jets 43 is preferably 450 to 600 m / s.
  • Compressed air, steam or combustion gases can be used as the compressed gas. Compressed air is preferably used.
  • FIG. 5 shows a modification of the device according to FIG. 4, the parallel limiting gas flows being formed, similarly to FIG. 3, by the part of a roller flow 36 parallel to the exhaust gas flow 31.
  • the inlet openings 21, 21 'and 21 are shown as cylindrical through-bores.
  • the inlet nozzles are preferably designed as Laval nozzles if the highest possible splitting of the primary melt thread into as many secondary melt threads as possible is desired in the inlet flow.
  • the propulsion jet nozzles 42 If high gas velocities are desired, the propulsion jet nozzles 42 are also preferably designed as Laval nozzles.
  • auxiliary propulsion jet nozzles 39 can also be provided for driving the roller flow 36. This is shown in Fig. 6 as a detail A.
  • the embodiment of the drawing nozzle according to the invention according to FIG. 7 contains central bodies 37 for stabilizing the roller flow 36.
  • the surface 38 of the central bodies 37 facing the central plane of the drawing nozzle is preferably flat and runs slightly divergent, as was already described in the description of FIG. 4. 8, auxiliary propulsion jet nozzles 39 for driving the roller flow 36 can also be provided here.
  • the pressurized gas for the propellant jets 43 is supplied through pressurized gas lines 41, which are arranged within the central body 37. With this arrangement, a heat transfer of the parallel gas streams heated up by the cooling of the melt threads to the propellant jet gas is made possible, so that part of the thermal energy contained in the mineral melt is recovered.
  • the figure shows a preferred arrangement of the melt outflow openings 12 and 12 'as a staggered double row.
  • the inlet openings 21 and 21 ' are also arranged in a double row.
  • 10 shows a top view of the inlet nozzle plate 2, from which the arrangement of the inlet openings 21 and 21 'can be seen.
  • the average distance between the surfaces 38 delimiting the parallel limiting gas flows 32 in the upper part of the drawing nozzle is preferably approximately 1.5 to 2.5 times the outlet diameter of the inlet opening 21 designed as a Lavall nozzle.
  • a drawing nozzle according to FIG. 5 is used. Instead of the cylindrical inlet bores 21, Laval nozzles are provided.
  • the Laval nozzles have a narrowest cross section of 4 mm.
  • the contour of the converging inlet part of the Laval nozzle has a radius of curvature of 1.2 mm.
  • the Laval part of the nozzle that adjoins from the narrowest cross section widens to a diameter of 4.6 mm.
  • the inlet nozzle plate 2 is 12 mm thick, corresponding to the length of the Laval nozzle.
  • the one adjoining the inlet nozzle 21 Pull-out part 3 expands to an open cross section of 30 mm.
  • the widest open cross-section is 20 mm below the inlet nozzle plate.
  • the total length of the drawing nozzle up to the inlet plane of the jet nozzles 42 is 65 mm.
  • the open cross section of the drawing nozzle has a width of 9 mm at this point.
  • 88 drive jet bores 42 each with a diameter of 1.7 mm open on both sides of the open drawing nozzle cross section.
  • the width of the flow channel at the point 51 at which the compression shock is brought about is 8 mm. This is followed by a subsonic diffuser 52 with an opening angle of 7 °.
  • the crucible 1 has on its underside 88 outlet openings 12, each 1.5 mm in diameter and at a mutual distance of 5 mm.
  • the drawing nozzle 88 has inlet nozzles 21.
  • the crucible contains a mineral melt of 90% by weight diabase (basalt) and 10% limestone at a temperature of 1,350 ° C. 30 g / min mineral melt emerges from each nozzle nipple.
  • the compressed air lines 41 are supplied with compressed air of 7.5 bar at room temperature. 3.6 g / s of blowing air are blown into the mixing zone 44 through each blowing jet nozzle 42. Due to the pressure gradient generated thereby within the drawing nozzle, the inlet flow forms above the inlet nozzles 21. 3 g / s ambient air are sucked into each inlet nozzle 21. In the narrowest cross section of the inlet nozzle 21, the critical or Laval velocity is from 314 to 325 m / s, depending on the warming of the incoming ambient air.
  • the pressure at the end of the inlet nozzle is 0.3 bar.
  • the pressure behind the compression joint at point 51 is 0.7 bar. It rises to 1 bar by the end of the subsonic diffuser.
  • Fibers with a diameter of 5.8 1 m and an average length of 40 mm are achieved.
  • the content of pearls with a diameter above 0.2 mm is 2%.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Glass Compositions (AREA)
  • Inorganic Fibers (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
EP82110088A 1981-11-12 1982-11-02 Verfahren und Vorrichtung zur Herstellung von Wollefasern Expired EP0081082B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82110088T ATE18386T1 (de) 1981-11-12 1982-11-02 Verfahren und vorrichtung zur herstellung von wollefasern.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3145011 1981-11-12
DE19813145011 DE3145011A1 (de) 1981-11-12 1981-11-12 Verfahren und vorrichtung zur herstellung von wollefasern

Publications (3)

Publication Number Publication Date
EP0081082A2 EP0081082A2 (de) 1983-06-15
EP0081082A3 EP0081082A3 (en) 1984-01-11
EP0081082B1 true EP0081082B1 (de) 1986-03-05

Family

ID=6146268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82110088A Expired EP0081082B1 (de) 1981-11-12 1982-11-02 Verfahren und Vorrichtung zur Herstellung von Wollefasern

Country Status (8)

Country Link
US (1) US4472329A (fi)
EP (1) EP0081082B1 (fi)
JP (1) JPS5888136A (fi)
AT (1) ATE18386T1 (fi)
DE (2) DE3145011A1 (fi)
DK (1) DK502982A (fi)
FI (1) FI72503C (fi)
NO (1) NO823553L (fi)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3305810A1 (de) * 1983-02-19 1984-08-23 Bayer Ag, 5090 Leverkusen Duesenziehverfahren und ziehduese zur zerteilung von schmelzen
DE3509424A1 (de) * 1985-03-15 1986-09-18 Grünzweig + Hartmann und Glasfaser AG, 6700 Ludwigshafen Einrichtung zur herstellung von mineralfasern aus silikatischen rohstoffen wie basalt, nach dem duesenblasverfahren
US4855179A (en) * 1987-07-29 1989-08-08 Arco Chemical Technology, Inc. Production of nonwoven fibrous articles
DE3810596A1 (de) * 1988-03-29 1989-10-12 Bayer Ag Feinstfasern aus polyphenylsulfid
US5196207A (en) * 1992-01-27 1993-03-23 Kimberly-Clark Corporation Meltblown die head
DE4319990A1 (de) * 1993-06-17 1994-12-22 Messer Griesheim Gmbh Verfahren zum Herstellen von Teilchen aus Kunststoffen
US5811178A (en) * 1995-08-02 1998-09-22 Kimberly-Clark Worldwide, Inc. High bulk nonwoven sorbent with fiber density gradient
US5711970A (en) * 1995-08-02 1998-01-27 Kimberly-Clark Worldwide, Inc. Apparatus for the production of fibers and materials having enhanced characteristics
US5667749A (en) * 1995-08-02 1997-09-16 Kimberly-Clark Worldwide, Inc. Method for the production of fibers and materials having enhanced characteristics
AU1022397A (en) * 1995-12-15 1997-07-14 Kimberly-Clark Corporation High temperature, high speed rotary valve
US6773246B2 (en) * 1996-11-19 2004-08-10 Tsao Chi-Yuan A. Atomizing apparatus and process
DE19929709C2 (de) * 1999-06-24 2001-07-12 Lueder Gerking Verfahren zur Herstellung von im Wesentlichen endlosen feinen Fäden und Verwendung der Vorrichtung zur Durchführung des Verfahrens
US6613268B2 (en) 2000-12-21 2003-09-02 Kimberly-Clark Worldwide, Inc. Method of increasing the meltblown jet thermal core length via hot air entrainment
DE10065859B4 (de) 2000-12-22 2006-08-24 Gerking, Lüder, Dr.-Ing. Verfahren und Vorrichtung zur Herstellung von im Wesentlichen endlosen feinen Fäden
KR100549140B1 (ko) * 2002-03-26 2006-02-03 이 아이 듀폰 디 네모아 앤드 캄파니 일렉트로-브로운 방사법에 의한 초극세 나노섬유 웹제조방법
DE10240191B4 (de) * 2002-08-28 2004-12-23 Corovin Gmbh Spinnvlies aus endlosen Filamenten
DE10322460B4 (de) * 2003-05-16 2007-02-08 Corovin Gmbh Verfahren und Vorrichtung zur Herstellung eines Spinnvlieses aus Filamenten aus aufgeplatzten Fasern, Filamente aus aufgeplatzen Fasern und Vliesstoff
DE102005001078A1 (de) * 2005-01-08 2006-07-20 Schott Ag Glaspulver, insbesondere biologisch aktives Glaspulver und Verfahren zur Herstellung von Glaspulver, insbesondere biologisch aktivem Glaspulver
US7827822B2 (en) * 2007-07-25 2010-11-09 Schott Corporation Method and apparatus for spray-forming melts of glass and glass-ceramic compositions
DE102013002413A1 (de) * 2013-02-11 2014-08-14 Dürr Systems GmbH Lochplatte für ein Applikationsgerät und entsprechendes Applikations- und Herstellungsverfahren
JP5946565B1 (ja) * 2015-06-23 2016-07-06 紘邦 張本 紡糸口金及び極細繊維製造装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR972326A (fr) * 1941-01-30 1951-01-29 Saint Gobain Procédé et appareil de production de fibres de verre
NL88040C (fi) * 1946-05-31
US2774630A (en) * 1952-07-17 1956-12-18 Owens Corning Fiberglass Corp Blower nozzle
DE1053146B (de) * 1955-02-16 1959-03-19 Ver Korkindustrie Ag Stromduese zur Herstellung von Glaswolle, Gesteinswolle od. dgl.
NL204626A (fi) * 1955-02-16
US3588951A (en) * 1968-11-08 1971-06-29 William G Hegmann Fractional disintegrating apparatus
GB1272229A (en) * 1968-11-27 1972-04-26 British Iron Steel Research Improvements in and relating to the treatment of molten material
US3547610A (en) * 1969-10-20 1970-12-15 Owens Corning Fiberglass Corp Environmental control device for a molten glass fiberizer
US3773483A (en) * 1970-05-06 1973-11-20 Fiberglas Canada Ltd Process for fibre drawing by fluid means
CH550605A (fr) * 1972-10-17 1974-06-28 Nestle Sa Procede d'agglomeration d'un produit pulverulent et dispositif pour sa mise en oeuvre.
DE3016114A1 (de) * 1980-04-25 1981-10-29 Rheinhold & Mahla Gmbh, 6800 Mannheim Verfahren und vorrichtung zur herstellung von mineralwollefasern

Also Published As

Publication number Publication date
FI72503C (fi) 1987-06-08
NO823553L (no) 1983-05-13
DK502982A (da) 1983-05-13
DE3145011A1 (de) 1983-05-19
EP0081082A3 (en) 1984-01-11
DE3269687D1 (en) 1986-04-10
JPS5888136A (ja) 1983-05-26
FI823856L (fi) 1983-05-13
EP0081082A2 (de) 1983-06-15
FI823856A0 (fi) 1982-11-10
US4472329A (en) 1984-09-18
ATE18386T1 (de) 1986-03-15
FI72503B (fi) 1987-02-27

Similar Documents

Publication Publication Date Title
EP0081082B1 (de) Verfahren und Vorrichtung zur Herstellung von Wollefasern
EP0038989B2 (de) Ziehdüse zur Durchführung eines Verfahrens zur Herstellung von Mineralwollefasern
DE60206472T2 (de) Verfahren und vorrichtung zur herstellung von mineralwolle
EP1585601B1 (de) Verfahren und einspritzdüse zum durchsetzen einer gasströmung mit flüssigkeitströpfchen
EP0331946B1 (de) Einrichtung zur Erzeugung von Fasern, insbesondere Mineralfasern, aus einer Schmelze
EP0584318A1 (de) Verfahren zur herstellung cellulosischer formkörper sowie vorrichtung zur durchführung des verfahrens.
DE2637536B2 (de) Verfahren und Vorrichtung zur Herstellung von Fasern aus einem unter Wärme erweichenden Material
DE3816340A1 (de) Verfahren und vorrichtung zum kuehlen eines heissen produktgases, das klebrige bzw. schmelzfluessige partikel enthaelt
DE1207559B (de) Verfahren und Vorrichtung zum Herstellen von kugelfoermigen Partikeln aus Glas oder anderen glasartigen Stoffen
AT223333B (de) Verfahren und Vorrichtung zur Herstellung von Fäden aus thermoplastischem Material, insbesondere von Glasfäden
EP0119426B1 (de) Düsenziehverfahren und Ziehdüse zur Zerteilung von Schmelzen
DE4139020C2 (de) Vorrichtung und Verfahren zur Herstellung eines Metallschaums
EP0122436B1 (de) Verfahren und Vorrichtung zur Reduktion der Geschwindigkeit von strömenden Medien
DE2917737A1 (de) Duesenkopf fuer eine glasfaserziehduese
EP0007536B1 (de) Verfahren und Vorrichtung zur Granulierung einer Metallschmelze zwecks Pulverherstellung
EP0119429B1 (de) Verfahren und Vorrichtung zur Zerteilung von Schmelzen
DE2726078C3 (de) Verfahren und Vorrichtung zum Entfernen von Schlacke o.dgl. von geschmolzenem Metall
EP0794022B1 (de) Verfahren und Vorrichtung sowie Kühlmedium zum Kühlen von walzwarmen Profilen
DE4129410A1 (de) Verfahren und vorrichtung zum formen von glasfasern
DE2807753A1 (de) Verfahren und anwendung zur herstellung von schlackenwolle, insbesondere von hochofenschlacken
AT244011B (de) Verfahren zum Herstellen von Fasern aus zähflüssigen Massen und Vorrichtung zum Durchführen des Verfahrens
EP0279286B1 (de) Verfahren und Vorrichtung zur Herstellung feinster mineralfasern, insbesondere Glasfasern
DE1551771C3 (de) Verbrennungseinrichtung mit einer Brennkammer zur inneren Verbrennung eines Brenngas-Luft-Gemisches
DE4141626C2 (de) Vorrichtung zur Erzeugung von Wolle, insbesondere Steinwolle, aus einer Schmelze
DE1199431B (de) Verfahren zum Herstellen von Fasern

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19821102

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 18386

Country of ref document: AT

Date of ref document: 19860315

Kind code of ref document: T

ITF It: translation for a ep patent filed

Owner name: ING. C. GREGORJ S.P.A.

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3269687

Country of ref document: DE

Date of ref document: 19860410

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19861114

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19861130

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19871130

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19881102

Ref country code: AT

Effective date: 19881102

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19881103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19881130

Ref country code: CH

Effective date: 19881130

Ref country code: BE

Effective date: 19881130

BERE Be: lapsed

Owner name: BAYER A.G.

Effective date: 19881130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19890601

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19890731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19890801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

EUG Se: european patent has lapsed

Ref document number: 82110088.0

Effective date: 19890726